elostirion74 wrote: Is there anything in Tolkien´s writings that suggests or supports Sauron raising the spirits of the dead in the manner of zombies or the like?

Tolkien made the decision to use the 'The Necromancer' to describe his villainous warlock, not Peter Jackson. Are you and sinister71 going to convince us that the Professor didn't understand the Latin origins of the term?

Let' be honest here, zombies may not suit your personal tastes, but they don't violate Tolkien canon in any way, shape, or form.